Solution by Graham Wheeler, played on Amstrad

Get Gun. E. E. N. N E. Get Bullets. Load Gun. Drop Bullets. W. S. S. E. S. S. Get Money. N. N. E. N. Break Glass Get Manuscript. N. Get String. S. S. E. E. E. S Get Torch. N. E. UP. N. N. N. Get Batteries S. W S. W Get Repair Kit. E. N. E. S. S. W W. S. Get Bucket Mend Bucket Drop Kil. N. E. E. E N N. W. W. W. W W. W. Light Torch. UP. E. E. E. E. E. E. E Shoot Lock Open Door. S. Fill Bucket N. E. E. E N. Get Matches S. E. S. Get Hammer. N. E. E. E. E. E. E. E. E. E. E. E. DOWN Extinguish Torch. E. E. E. N. Drop Hammer. Drop Bucket. Drop Manuscript. S W. W. W. UP. Light Torch. E. N. Get Chair. S. E. DOWN. Extinguish Torch. E. E. N. Get Nails. S E. N. Drop Nails. S. E. E. E. S. E. DOWN. DOWN. Light Torch. W. W. W. N. E. E. E. Get Key. E. E. E. E. Burn Rope. Get Packet. Open Packet. Drop Packet Get Book W S. S. W. Get Crowbar. E. E. Use Chair. Get Wood. W N. E. E. E. UP. Extinguish Torch. UP. W. N. W. W. W. N. Drop Chair. Drop Wood. Get Manuscript. Read Book. Read Manuscript. E. Question Guard (he gives you a code lo open the case). Hang Guard (with string). W. Get Bucket. E. Oil Lock. Unlock Door. Open Door. W. Drop Bucket. Get Hammer. Get Wood. Get Nails. E. N. Light Torch. DOWN. Mend Stairs DOWN. Unlock Case (you will be asked to enter a code). Get Ruby. UP. UP. S. W. S. E. E. E. S. E. DOWN. W W. W W. W. W. W. W (in porch).

Notes : The Crowbar may be needed lo PRISE FLOORBOARDS il the key drops through them. The decoded manuscript says - You need a certain 12 digit number to ensure your success and you can get it by questioning the only other sentient being in the house. Remember however, treachery is a perfectly lair game.